Dust-guard.



PATENTED AUG. '7, 1906.

F. ELHOLT.

DUST GUARD. APPLIOATION FILED FEB. 9. 190e.

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FRANK EVANS HOLT, OF VANCOUVER, CANADA.

DUST-GUARD.

Specification of Letters Patent.

Patented Aug. 7, 1906.

Application filed February 9, 1906. Serial No. 300.274.

TQ all when@ 1,15 wur/y concern:

Be it known that I, FRANK EvANs HOLT, of Vancouver, county of New Westminster, Province of British Columbia, Dominion of Canada, have invented certain new and useful Improvements in Dust-Guards and I do hereby declare that the following is a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to improvements in dust-guards for car-axle ournal-box, and has special reference to a device of this class which is adapted to be placed in the ordinary standard journal-box.

Among the advantages attained by this invention is the production of a dust-guard embodying features of efficiency, durability, and simplicity which insure the exclusion of dust and retention of oil and render the guard accommodative to car-axle boxes of standard form.

The object of the invention is to provide a device of the class described which is formed of few parts so connected and arranged as to be practically inseparable when the parts are in use.

The invention consists in the combination and arrangement of parts which are shown in the accompanying drawings, all as hereinafter more fully described, and particularly pointed out in the claims, it being understood that said drawings illustrate the preferred construction, which may be departed from in the form, proportion, and minor details of parts therein shown within the scope of the claims without sacrificing any of the advantages of the invention.

In the accompanying drawings, in which similar characters of reference indicate corresponding parts in all the views, Figure 1 is a longitudinal sectional view taken through a car-axle box, showing the improved dustguard in position in the pocket provided therein. Fig. 2 is a vertical sectional view taken approximately on line 2 2 of Fig. l looking in the direction indicated by the arrow. Fig. 3 is a face view of the wheel side of the dust-guard. Fig. 4 is a central verti'- cal sectional view of Fig. 3, and Fig. 5 is a sectional view taken approximately on line 5 5 of Fig. 4. Fig. 6 is a section on the line 6 6 of Fig. 5. Fig. 7 is an edge view of the invention. I

Referring to the parts, 1 is a standard journal-box which is provided with the usual slide-pocket 2, in which is placed the slide or holder 3, comprising the present invention. This holder comprises a rigid member which may be formed of a plurality of plates secured together or from a single plate which is cut to the required form and provided with cavities, hereinafter referred to, though the holder formed of a single plate is preferred, because of its simplicity. The holder 3 is provided with an approximately elliptical central opening 4, at each side of which are formed stop-shoulders 5, the function of which will be hereinafter described.. Extending longitudinally of the plates or plate forming the holder 3 are cavities 6, both above and below said central opening, in which cavities are seated the slides 7, which slides are normally pressed toward the center of the opening 4 by means of the Z- shaped springs 8, which bear, respectively, upon the plates 7 and upon the transverselyextending closure 9 of the holder 3.

lf the holder is formed of a single piece of material-as of wood, for examplethe stops 9 may be integral with said plate; but if the holder is formed of a plurality of plates secured together then the stops 9 are preferably separate pieces which are secured at the ends of said plates beyond the cavity 6 in any desired manner, so as to serve as stops for the springs 8 referred to.

To prevent excessive inward thrust of the plates 7, said plates are provided with the elongations 10, which abut against the shoulders 5 when said plates are at their innermost position but owing to the resiliency of the springs 8 it is evident that the plates 7 may be separated to permit placing the device upon a car-axle 11, and when so placed the springs 8 will at all times keep the said plates in contact with the caraxle, thereby preventing the discharge of dust from the wheel side of the box into the oil-receptacle.

To further guard the oil-receptacle, the plates 3 are provided with packing-strips 12, of felt, upon the lower portion, near the lower edge and nearthe side edges of the member` 3, there being no packing across the upper portion of the member 3 upon the wheel side; but upon the opposite side of the member 3 there is provided a packing 13, of felt, which rests between said member 3 and the rear face of the box 1. Thus if dust should pass between the member 3 and into receptacle 2 from the wheel side said dust will only fall upon the axle 11 and thence to the ground 5 IIO but if by a chance any dust should be carried below the axle into receptacle 2 the packingn strips 12 will prevent the passage of said dust into the interior of the box l, and the packing-strip 13, which is laced near the member 3 and said box, wi l prevent the passage of dust between the member 3 and the oilchamber from above.

In order to enable me to get the packing'- plates 7 into the holder 3, I slit the sides as at 25, and after the spring 8 and the member 7 havevbeen placed in position strips 26 are inserted to close up'the slots 25 and are held in place by screws 27, as shown.

Having thus'described my invention, what I claim as new, and desire tosecure by Letters Patent, isv 1. In a car-axle dust-guard, a holder formed of a single piece of material having a central opening with cavities at opposite sides of said opening and lformed with stops extending transversely across said cavities atthe bottom, slides seated in said cavities, springs within said cavities and bearing on said slides, said holder having slots'in its sides to permit of insertion of the slides through the sides of the holder, closure-strips for said holder-slots, and means for maintaining said closure-strips in said slots, substantially as shown and described.

2. In a car-axle dust-guard, a holder formed of a single piece of material having a central opening provided with cavities at opposite sides of said opening, slides seated in said cavities, springs held within said cavities to bear against said slides and thev bottom wall of said cavities', said holder having slots in its sides for the insertion of the slides into the holder, closure-strips for said slots, means Jfor securing said closure-strips in place, packing-strips on three of the edge p0r-k tions of said holder upon one side thereof,

and a packing-strip upon the relatively rei maining edge portion upon the opposite side of the holder, substantially as shown and described.

FRANKEVANS HOLT. Witnesses:

A. E. DIETERICH, E. E. SAGER. 

